40x^3+30x^2=100x

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Solution for 40x^3+30x^2=100x equation:


Simplifying
40x3 + 30x2 = 100x

Reorder the terms:
30x2 + 40x3 = 100x

Solving
30x2 + 40x3 = 100x

Solving for variable 'x'.

Reorder the terms:
-100x + 30x2 + 40x3 = 100x + -100x

Combine like terms: 100x + -100x = 0
-100x + 30x2 + 40x3 = 0

Factor out the Greatest Common Factor (GCF), '10x'.
10x(-10 + 3x + 4x2) = 0

Factor a trinomial.
10x((-2 + -1x)(5 + -4x)) = 0

Ignore the factor 10.

Subproblem 1

Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0

Subproblem 2

Set the factor '(-2 + -1x)' equal to zero and attempt to solve: Simplifying -2 + -1x = 0 Solving -2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -1x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1x = 0 + 2 -1x = 0 + 2 Combine like terms: 0 + 2 = 2 -1x = 2 Divide each side by '-1'. x = -2 Simplifying x = -2

Subproblem 3

Set the factor '(5 + -4x)' equal to zero and attempt to solve: Simplifying 5 + -4x = 0 Solving 5 + -4x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -4x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -4x = 0 + -5 -4x = 0 + -5 Combine like terms: 0 + -5 = -5 -4x = -5 Divide each side by '-4'. x = 1.25 Simplifying x = 1.25

Solution

x = {0, -2, 1.25}

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